I've replaced all my lines on my truck last year when I blew the rear line right near the spare tire. I used Nickle-copper lines I got from Napa. Cost more than standard lines, not near as much as SS lines. They will not corrode, I find them to be 10X easier to flare as well. Since they are softer then standard and SS lines, if you have a small discrepancy in your doule flare, when you tighten down the line it will form to the fitting and seal better.
The only down side of these lines is that since they are soft, you need to be easier with "hand" bending. I used a small tube bender to do most of my bends limiting hand bending. the line will crimp pretty easily if you get too sloppy with it trying to make tight bends by hand.